An Analysis of the Effects of Gibberellic Acid on Tomato Leaf Growth

Briant, R. E.

doi:10.1093/jxb/25.4.764

Cited by 16 publications

(11 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Leaflets of GA,-treated dwalf plants had weights less than and surface areas greater than control dwarf plants, the values for both weight and surface area approaching those of control normal plants. This decrease in fresh weight of the treated leaflets was in direct contrast to Briant's (1974) observed increase for tomato leaves treated with GA,, although Briant's differences were significant only for the youngest leaves.…”

Section: Methodscontrasting

confidence: 63%

“…Related studies on leafgrowth are not nearly as numerous, possibly owing to the weak responses that leaves show to GA,, despite the assumption that leaves are the major site of GA synthesis (Jones and Phillips 1966). Briant (1974) found that GA, sprayed on young tomato leaves increased total leaf weight and area. Brian et al (1959) showed that GA, could change the shape of cultivar Cupid sweet pea leaves from ovate to lanceolate while increasing leaf area.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An analysis of the effects of gibberellic acid on the leaflet structure of dwarf cultivars of pea (Pisum sativum)

Israelstam¹,

Davis²

1979

Can. J. Bot.

View full text Add to dashboard Cite

ISRAELSTAM, G. F., iind E. DAVIS. 1979. An analysisof the effectsofgibberellic acid on the leaflet structure of dwarf cultivars of pea (Pi.srrtn scrticrrtn). Can. J . Bot. 57: 1089-1092. The effectsof gibberellic acid (GA,) on the penultimate leafletsof dwarf and normal cultivars of pea were investigated. In control plants, the leaflets of the d w a~f were heavier, thicker, and had a smaller surface area than the normal. Epidermal and palisade cells of the dwarf were longer than those of the normal cultivar and the dwarf had longer spongy mesophyll cells and more layers of spongy mesophyll than the normal, with fewer intercellular spaces.Application of GA, to dwarf plants increased leaflet surface area and length of epidermal cells, while leaflet weight and thickness and the number of layers of spongy mesophyll cells decreased. No significant changes in the leaflet of the normal cultivar were induced by GA,.The overall effect of GA, application to the dwarf cultivar was to induce a degree of differentiation in the penultimate leaflets such that they tended to resemble more closely those of the normal cultivar. ISRAELSTAM, G. F., et E. DAVIS. 1979. An analysis of the effects of gibberellic acid on the leaflet structure of dwarf cultivars of pea (Pisrrtn saticrrtn). Can. J. Bot. 57: 1089-1092. Les auteurs ont etudie les effets de I'acidegibbel-ellique (GA,) sur les folioles penultitmes d'un cultival-nain et d'un cultivar normal de pois. Chez les plantes temoins. les folioles du cultivarnain sont plus lourdes, plus epaisses et ont une sul-face reduite par rapport au cultivar normal. Les cellules epidel-miques et palissadiques du cultival-nilin sont plus longues que celles du cultivar normal et le cultival-nain a d e s couches plus nombreuses et plus longues de misophylle spongieux que le cultivar normal et moins d'espaces intercellulaires. L'application d e GA, B des plantes naines augmente la surface des folioles et la longueur des cellules epidermiques, alors que le poids des folioles, I'epaisseur et le nombre de couches d e cellules du mesophylle spongieux diminuent. I1 n'y a pas de changements significatifs dans la foliole du cultivar normal sous I'effet d e GA,. L'effet global d e I'application de GA, au cultivar nain consiste r'l induire dans les folioles penultitmes un degre de differenciation tel qu'elles tendent ressembler B celles du cultivar normal. [ T~x d u i t par le journal]

show abstract

Section: Methodscontrasting

confidence: 63%

Section: Introductionmentioning

confidence: 99%

An analysis of the effects of gibberellic acid on the leaflet structure of dwarf cultivars of pea (Pisum sativum)

Israelstam¹,

Davis²

1979

Can. J. Bot.

View full text Add to dashboard Cite

show abstract

“…Plant growth regulators (auxins, gibberellins, abscisic acid) are used in agricultural industry for stimulation and synchronization of flowering and fruit setting, promotion of rooting, reduction of vegetative growth, reduction of lodging of agronomic crops, or defoliation (Briant 1974). On the other hand, plant growth retardants, such as ancymidol, daminozide, paclobutrazol, chlormequat chloride, and uniconazole are used specifically to reduce vegetative growth and control plant size and shape (Latimer 1991).…”

Section: ⎯⎯⎯⎯mentioning

confidence: 99%

Effects of gibberellic acid and prohexadione-calcium on growth, chlorophyll fluorescence and quality of okra plant

Ilias¹,

Ouzounidou²,

Γιαννακούλα³

et al. 2007

Biol. plant.

View full text Add to dashboard Cite

The experiment was conducted to identify the response of three cultivars of okra [Abelmoschus esculentus (L.) Moench] to exogenous hormones [gibberellic acid-(GA 3) and prohexadione-Ca] applied as foliar spray. Stem and leaf dry masses and stem length were significantly enhanced by the application of exogenous GA 3 , but prohexadione-Ca inhibited growth. Control and prohexadione-Ca treated okra plants took more time to bloom than did GA 3 treated plants. In the fruits of all the cultivars a decrease in fructose content was observed, while protein content remained almost unchanged after the application of the two growth regulators. The small changes in chlorophyll a fluorescence characteristics observed under prohexadione-Ca suggested a weakening of the photochemical processes near the photosystem 2 reaction centre. The lowering of ratio between maximum time to reach maximum fluorescence, F m (T max ) and Area (sum of F m -F t for t = 0 to t = T max ) caused by GA 3 was probably due to the increase of Area rather than to changes in T max .

show abstract

“…Additionally, foliar application of gibberellins stimulates and synchronizes flowering and fruit set (Briant, 1974), as well as enhancing photosynthesis and growth (Yuan & Xu, 2001), or stimulating growth but not the rate of photosynthesis (Dijkstra & Kuiper, 1989).…”

Section: Introductionmentioning

confidence: 99%

Effect of Gibberellic Acid and Harvesting Time on the Seed Quality of Four Okra Cultivars

Mohammadi¹,

Khah²,

Petropoulos³

et al. 2014

JAS

View full text Add to dashboard Cite

In an experiment at the University of Thessaly during the summer season of 2011, the effect of foliar application of gibberellic acid (GA 3 ) to okra at an early stage of plant growth (3-4 leaves) on plant growth, pod and seed characteristics was studied in relation to harvest time. GA 3 was applied at concentrations of 0 (Control), 50, and 100 mg L -1 to four okra cultivars ('Boyiatiou', 'Veloudo', 'Clemson' and 'Pylaias') and pods were harvested 30, 35, 40 and 50 days after anthesis (DAA) from the lower part of the plant. From the results it was found that GA 3 application increased plant height irrespective of cultivar and GA 3 concentration (50 and 100 mg L -1 ), but without increasing flower induction or pod set. Similarly, GA 3 had no effect on pod dimensions (which were determined by genotype) or mean 100 seed weight, except in Boyiatiou. Similarly, GA 3 application did not consistently affect seed moisture content, but it did however, increase the number of seeds per pod. Germination was either promoted ('Veloudo'), inhibited ('Boyiatiou') or not affected ('Pylaias', 'Clemson') by GA 3 . Differences in germination were apparently related to the incidence of hard seeds. Storage of seeds for 18 months improved germination. Overall, pod and seed characteristics were affected more by genotype and harvest time than by GA 3 application.

show abstract

An Analysis of the Effects of Gibberellic Acid on Tomato Leaf Growth

Cited by 16 publications

References 0 publications

An analysis of the effects of gibberellic acid on the leaflet structure of dwarf cultivars of pea (Pisum sativum)

An analysis of the effects of gibberellic acid on the leaflet structure of dwarf cultivars of pea (Pisum sativum)

Effects of gibberellic acid and prohexadione-calcium on growth, chlorophyll fluorescence and quality of okra plant

Effect of Gibberellic Acid and Harvesting Time on the Seed Quality of Four Okra Cultivars

Contact Info

Product

Resources

About